Koji Noguchi created PIG-3492:
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Summary: ColumnPrune dropping used column due to
LogicalRelationalOperator.fixDuplicateUids changes not propagating
Key: PIG-3492
URL: https://issues.apache.org/jira/browse/PIG-3492
Project: Pig
Issue Type: Bug
Affects Versions: 0.11.1, 0.12.1, 0.13.0
Reporter: Koji Noguchi
I don't have a testcase I can upload at the moment, but here's my observation.
SplitFilter -> schemaResetter -> LOGenerate.getSchema ->
LogicalRelationalOperator.fixDuplicateUids() creating a new UID but that UID is
not propagated to the entire plan (since SplitFilter.reportChanges only returns
subplan).
As a result, I am seeing ColumnPruning cutting off those used columns.
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